ip_mroute.h revision 1.18
1 /* $NetBSD: ip_mroute.h,v 1.18 2000/03/23 07:03:29 thorpej Exp $ */ 2 3 /* 4 * Definitions for IP multicast forwarding. 5 * 6 * Written by David Waitzman, BBN Labs, August 1988. 7 * Modified by Steve Deering, Stanford, February 1989. 8 * Modified by Ajit Thyagarajan, PARC, August 1993. 9 * Modified by Ajit Thyagarajan, PARC, August 1994. 10 * 11 * MROUTING Revision: 1.2 12 */ 13 14 #ifndef _NETINET_IP_MROUTE_H_ 15 #define _NETINET_IP_MROUTE_H_ 16 17 #include <sys/queue.h> 18 #include <sys/callout.h> 19 20 /* 21 * Multicast Routing set/getsockopt commands. 22 */ 23 #define MRT_INIT 100 /* initialize forwarder */ 24 #define MRT_DONE 101 /* shut down forwarder */ 25 #define MRT_ADD_VIF 102 /* create virtual interface */ 26 #define MRT_DEL_VIF 103 /* delete virtual interface */ 27 #define MRT_ADD_MFC 104 /* insert forwarding cache entry */ 28 #define MRT_DEL_MFC 105 /* delete forwarding cache entry */ 29 #define MRT_VERSION 106 /* get kernel version number */ 30 #define MRT_ASSERT 107 /* enable PIM assert processing */ 31 32 33 /* 34 * Types and macros for handling bitmaps with one bit per virtual interface. 35 */ 36 #define MAXVIFS 32 37 typedef u_int32_t vifbitmap_t; 38 typedef u_int16_t vifi_t; /* type of a vif index */ 39 40 #define VIFM_SET(n, m) ((m) |= (1 << (n))) 41 #define VIFM_CLR(n, m) ((m) &= ~(1 << (n))) 42 #define VIFM_ISSET(n, m) ((m) & (1 << (n))) 43 #define VIFM_SETALL(m) ((m) = 0xffffffff) 44 #define VIFM_CLRALL(m) ((m) = 0x00000000) 45 #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom)) 46 #define VIFM_SAME(m1, m2) ((m1) == (m2)) 47 48 #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */ 49 #define VIFF_SRCRT 0x2 /* tunnel uses IP src routing */ 50 51 /* 52 * Argument structure for MRT_ADD_VIF. 53 * (MRT_DEL_VIF takes a single vifi_t argument.) 54 */ 55 struct vifctl { 56 vifi_t vifc_vifi; /* the index of the vif to be added */ 57 u_int8_t vifc_flags; /* VIFF_ flags defined below */ 58 u_int8_t vifc_threshold; /* min ttl required to forward on vif */ 59 u_int32_t vifc_rate_limit; /* max rate */ 60 struct in_addr vifc_lcl_addr;/* local interface address */ 61 struct in_addr vifc_rmt_addr;/* remote address (tunnels only) */ 62 }; 63 64 /* 65 * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC. 66 * (mfcc_tos to be added at a future point) 67 */ 68 struct mfcctl { 69 struct in_addr mfcc_origin; /* ip origin of mcasts */ 70 struct in_addr mfcc_mcastgrp; /* multicast group associated */ 71 vifi_t mfcc_parent; /* incoming vif */ 72 u_int8_t mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ 73 }; 74 75 /* 76 * Argument structure used by mrouted to get src-grp pkt counts. 77 */ 78 struct sioc_sg_req { 79 struct in_addr src; 80 struct in_addr grp; 81 u_long pktcnt; 82 u_long bytecnt; 83 u_long wrong_if; 84 }; 85 86 /* 87 * Argument structure used by mrouted to get vif pkt counts. 88 */ 89 struct sioc_vif_req { 90 vifi_t vifi; /* vif number */ 91 u_long icount; /* input packet count on vif */ 92 u_long ocount; /* output packet count on vif */ 93 u_long ibytes; /* input byte count on vif */ 94 u_long obytes; /* output byte count on vif */ 95 }; 96 97 98 /* 99 * The kernel's multicast routing statistics. 100 */ 101 struct mrtstat { 102 u_long mrts_mfc_lookups; /* # forw. cache hash table hits */ 103 u_long mrts_mfc_misses; /* # forw. cache hash table misses */ 104 u_long mrts_upcalls; /* # calls to mrouted */ 105 u_long mrts_no_route; /* no route for packet's origin */ 106 u_long mrts_bad_tunnel; /* malformed tunnel options */ 107 u_long mrts_cant_tunnel; /* no room for tunnel options */ 108 u_long mrts_wrong_if; /* arrived on wrong interface */ 109 u_long mrts_upq_ovflw; /* upcall Q overflow */ 110 u_long mrts_cache_cleanups; /* # entries with no upcalls */ 111 u_long mrts_drop_sel; /* pkts dropped selectively */ 112 u_long mrts_q_overflow; /* pkts dropped - Q overflow */ 113 u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */ 114 u_long mrts_upq_sockfull; /* upcalls dropped - socket full */ 115 }; 116 117 118 #ifdef _KERNEL 119 120 /* 121 * The kernel's virtual-interface structure. 122 */ 123 struct vif { 124 struct mbuf *tbf_q, **tbf_t; /* packet queue */ 125 struct timeval tbf_last_pkt_t; /* arr. time of last pkt */ 126 u_int32_t tbf_n_tok; /* no of tokens in bucket */ 127 u_int32_t tbf_q_len; /* length of queue at this vif */ 128 u_int32_t tbf_max_q_len; /* max. queue length */ 129 130 u_int8_t v_flags; /* VIFF_ flags defined above */ 131 u_int8_t v_threshold; /* min ttl required to forward on vif */ 132 u_int32_t v_rate_limit; /* max rate */ 133 struct in_addr v_lcl_addr; /* local interface address */ 134 struct in_addr v_rmt_addr; /* remote address (tunnels only) */ 135 struct ifnet *v_ifp; /* pointer to interface */ 136 u_long v_pkt_in; /* # pkts in on interface */ 137 u_long v_pkt_out; /* # pkts out on interface */ 138 u_long v_bytes_in; /* # bytes in on interface */ 139 u_long v_bytes_out; /* # bytes out on interface */ 140 struct route v_route; /* cached route if this is a tunnel */ 141 struct callout v_repq_ch; /* for tbf_reprocess_q() */ 142 #ifdef RSVP_ISI 143 int v_rsvp_on; /* # RSVP listening on this vif */ 144 struct socket *v_rsvpd; /* # RSVPD daemon */ 145 #endif /* RSVP_ISI */ 146 }; 147 148 /* 149 * The kernel's multicast forwarding cache entry structure. 150 * (A field for the type of service (mfc_tos) is to be added 151 * at a future point.) 152 */ 153 struct mfc { 154 LIST_ENTRY(mfc) mfc_hash; 155 struct in_addr mfc_origin; /* ip origin of mcasts */ 156 struct in_addr mfc_mcastgrp; /* multicast group associated */ 157 vifi_t mfc_parent; /* incoming vif */ 158 u_int8_t mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ 159 u_long mfc_pkt_cnt; /* pkt count for src-grp */ 160 u_long mfc_byte_cnt; /* byte count for src-grp */ 161 u_long mfc_wrong_if; /* wrong if for src-grp */ 162 int mfc_expire; /* time to clean entry up */ 163 struct timeval mfc_last_assert; /* last time I sent an assert */ 164 struct rtdetq *mfc_stall; /* pkts waiting for route */ 165 }; 166 167 /* 168 * Structure used to communicate from kernel to multicast router. 169 * (Note the convenient similarity to an IP packet.) 170 */ 171 struct igmpmsg { 172 u_int32_t unused1; 173 u_int32_t unused2; 174 u_int8_t im_msgtype; /* what type of message */ 175 #define IGMPMSG_NOCACHE 1 176 #define IGMPMSG_WRONGVIF 2 177 u_int8_t im_mbz; /* must be zero */ 178 u_int8_t im_vif; /* vif rec'd on */ 179 u_int8_t unused3; 180 struct in_addr im_src, im_dst; 181 } __attribute__((__packed__)); 182 183 /* 184 * Argument structure used for pkt info. while upcall is made. 185 */ 186 struct rtdetq { 187 struct mbuf *m; /* a copy of the packet */ 188 struct ifnet *ifp; /* interface pkt came in on */ 189 #ifdef UPCALL_TIMING 190 struct timeval t; /* timestamp */ 191 #endif /* UPCALL_TIMING */ 192 struct rtdetq *next; 193 }; 194 195 #define MFCTBLSIZ 256 196 #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ 197 198 /* 199 * Token bucket filter code 200 */ 201 #define MAX_BKT_SIZE 10000 /* 10K bytes size */ 202 #define MAXQSIZE 10 /* max. no of pkts in token queue */ 203 204 205 int ip_mrouter_set __P((struct socket *, int, struct mbuf **)); 206 int ip_mrouter_get __P((struct socket *, int, struct mbuf **)); 207 int mrt_ioctl __P((struct socket *, u_long, caddr_t)); 208 int ip_mrouter_done __P((void)); 209 void reset_vif __P((struct vif *)); 210 #ifdef RSVP_ISI 211 int ip_mforward __P((struct mbuf *, struct ifnet *, struct ip_moptions *)); 212 int legal_vif_num __P((int)); 213 int ip_rsvp_vif_init __P((struct socket *, struct mbuf *)); 214 int ip_rsvp_vif_done __P((struct socket *, struct mbuf *)); 215 void ip_rsvp_force_done __P((struct socket *)); 216 /*int rsvp_input __P((struct mbuf *, struct ifnet *));*/ 217 void rsvp_input __P((struct mbuf *, int, int)); 218 #else 219 int ip_mforward __P((struct mbuf *, struct ifnet *)); 220 #endif 221 int mrt_ipip_input __P((struct mbuf *, int)); 222 223 #endif /* _KERNEL */ 224 225 #endif /* _NETINET_IP_MROUTE_H_ */ 226
Indexes created Sun Sep 28 16:09:52 GMT 2025